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LibWeb: Support multiple values in :lang() selector

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Parse them, and also don't give up completely if the first language
listed doesn't match an element.
This commit is contained in:
Sam Atkins 2023-08-16 14:37:47 +01:00 • committed by Andreas Kling
parent 39cba61c2d
commit 12a2750d1e
5 changed files with 63 additions and 7 deletions
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24
Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
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@ -664,9 +664,29 @@ Parser::ParseErrorOr<Selector::SimpleSelector> Parser::parse_pseudo_simple_selec
};
}
case PseudoClassMetadata::ParameterType::LanguageRanges: {
// FIXME: Support multiple, comma-separated, language ranges.
Vector<FlyString> languages;
languages.append(pseudo_function.values().first().token().to_string().release_value_but_fixme_should_propagate_errors());
auto function_token_stream = TokenStream(pseudo_function.values());
auto language_token_lists = parse_a_comma_separated_list_of_component_values(function_token_stream);
for (auto language_token_list : language_token_lists) {
auto language_token_stream = TokenStream(language_token_list);
language_token_stream.skip_whitespace();
auto language_token = language_token_stream.next_token();
if (!(language_token.is(Token::Type::Ident) || language_token.is(Token::Type::String))) {
dbgln_if(CSS_PARSER_DEBUG, "Invalid language range in :{}() - not a string/ident", pseudo_function.name());
return ParseError::SyntaxError;
}
auto language_string = language_token.is(Token::Type::String) ? language_token.token().string() : language_token.token().ident();
languages.append(MUST(FlyString::from_utf8(language_string)));
language_token_stream.skip_whitespace();
if (language_token_stream.has_next_token()) {
dbgln_if(CSS_PARSER_DEBUG, "Invalid language range in :{}() - trailing tokens", pseudo_function.name());
return ParseError::SyntaxError;
}
}
return Selector::SimpleSelector {
.type = Selector::SimpleSelector::Type::PseudoClass,
.value = Selector::SimpleSelector::PseudoClassSelector {